Pen



FIG. 1 is a front view of a pen showing my new design, with the rear view being the mirror image,

FIG. 2 is a front view with the cap off thereof,

FIG. 3 is a perspective view of front and bottom thereof,

FIG. 4 is a perspective view of front and top view thereof,

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines in FIG. 2 are included for the purpose of showing a portion of the pen that forms no part of the claimed design. 

CLAIM I claim the ornamental design for a pen, as shown and described. 